An enhanced port for the Nintendo Switch, Super Mario 3D World + Bowser's Fury,[c] was announced on September 3, 2020 as part of the Super Mario Bros. 35th Anniversary Nintendo Direct and released worldwide on February 12, 2021 alongside Cat Mario and Cat Peach Amiibo figures.[32] The port adds an online multiplayer option, Amiibo functionality to spawn power-ups, a Snapshot feature for taking in-game screenshots, and four-player co-op to the Captain Toad levels. Other differences include the base speed of characters being increased and the stamps unlocked throughout the game, originally intended for the now-discontinued Miiverse service, can now be used to decorate the environment in Snapshot mode.[33][34][35][36]
The new Bowser's Fury campaign follows Mario as he winds up in a place known as Lake Lapcat and teams up with Bowser Jr. in order to stop Bowser, who has been transformed by an inky substance into Fury Bowser. Unlike the main campaign, Bowser's Fury takes place in a large free-roaming area similar to the open world Super Mario games. Mario must explore the islands in order to retrieve Cat Shines. Bowser Jr., who can be controlled by a second player, can assist Mario by using his paintbrush to attack enemies and reveal secrets. Occasionally, Fury Bowser awakens and begins to attack, transforming the island in certain places. By collecting the Cat Shines, Mario gains access to the Giga Bell, a large version of the Super Bell, which transforms Mario into Giga Cat Mario so that he can take on Fury Bowser.